from rsf.proj import *

Flow('spk',None,
     '''
     spike n1=129 n2=1 n3=129 n4=1
     d1=0.004 d2=0.008 d3=0.008 d4=0.008
     nsp=3 k1=100,75,50 k2=1,1,1 k3=50,75,100 |
     bandpass flo=10 fhi=50
     ''')
Flow('pkx','spk','cosft sign3=1 sign4=1')

dv = {'p': 0.5,
      'm': -0.3}

for c in dv.keys():
    pl = 'pl'+c
    Flow(pl,'pkx',
         '''
         fourvc pad=256 pad2=512 nv=1 v0=1. dv=%g |
         cosft sign3=-1 sign4=-1 |
         window
         ''' % dv[c])
    Plot(pl,
         'grey label2=Midpoint title="From 1 km/s to %g km/s" ' % (1+dv[c]))

Result('velimp','plp plm','SideBySideIso')

End()